Best AI video generator for TikTok and Reels

1. Native 9:16, not a crop

Generating 16:9 and cropping to vertical throws away the sides of the frame, which is exactly where the subject usually sits. Pick a tool that lets you choose 9:16 before you render, so the model composes for the vertical frame from the start.

2. Five to ten seconds beats longer

Short AI clips hold together better — less time for motion to drift — and they loop, which quietly multiplies watch time. Ten seconds that loops twice outperforms a twenty second clip that sags in the middle.

• One subject, one action, one camera move per clip
• Start on the subject — no slow build-up before the hook
• End near where you started so the loop is seamless
• Leave the top and bottom clear for captions and UI

3. A loop fast enough to batch

Posting daily means five to seven clips a week. What matters is the time from idea to export, not the maximum quality ceiling. A tool that renders a 5 second vertical clip in a couple of minutes lets you build a week of content in one sitting; a slower, higher-end pipeline does not.

Where expidvid fits

expidvid renders 5, 8 or 10 second clips at 720p in native 9:16, from a prompt or from a photo you upload — which is the fastest route when you want your real product in the shot. Finished clips are saved in your studio, so you can pull a week's worth down in one pass.

• Vertical selected before generating, not cropped after
• Photo mode keeps a real product or person recognisable
• Per-second credits, so drafts are cheap
• No watermark on output

The mistake that wastes the most credits

Writing a prompt with two competing actions. The model splits its attention and the clip blurs in the middle — the exact frame a viewer decides whether to keep watching. Cut the second action and render again.